MCQ
If ${H^ + }$ ion concentration of a solution is increased by $10 $ times its $ pH $ will be
- AIncrease by one
- BRemains unchanged
- ✓Decrease by one
- DIncrease by $ 10$
$pH = \log \frac{1}{{[{H^ + }]}}$
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$C (diamond) + O_2 \rightarrow CO_2(g)\ ;\Delta H =\ -97.6\ kcal$
$C (graphite) + O_2 \rightarrow CO_2(g)\ ;\Delta H =\ -94.3\ kcal$
The heat change for the conversion of $1\ g$ of $C (diamond) \rightarrow C (graphite)$ is